Ching-Hua Liao, Chun-Min Qiu, Chi-En Hung, Sheng-Chung Chen, Chih-Hung Wu, Shuoheng Shen, Qiang Li, Hai Lin
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Removal adsorption of LED industrial wastewater by after resource utilization of agricultural waste
Nowadays the market value and scope of the Light-Emitting Diode (LED) industry are increasing and the amount of waste in the process has also increased. The wastewater containing gallium (Ga) ion is also produced in the LED process, such as etching, washing, and grinding. This gallium element was very rare and valuable on the earth. In this study, the agricultural waste of pomelo peel was used to be the bioadsorbent to recycle the gallium from the gallium ion wastewater to achieve the purpose of the use of waste to recycle. According to the bioadsorption tests, the use of hydrochloric acid modified bioadsorbent of pomelo peel could achieve 96.80 % bioadsorption efficiency under the optimized condition found in this study.
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